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Home -> Community -> Mailing Lists -> Oracle-L -> arclog destination size
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Sandy,
Add as much space as you can get!!!
If you are shooting for 4 hour intervals, I would ask for something like
<your # of arclogs per hour at peak> * <size of arclogs> = hourly_bytes
4 * <hourly_bytes> = initial size of arclog destination
Assuming it takes 1 hour to run your arclog cleanups: add another hourly_bytes to your total. That way you can hold 4 hours worth of arclogs plus another hour's worth while the cleanup script is running. Of course this is very pessimistic.
Does that make sense? You may also choose to size it down if you have definite information about your peak processing times (only lasts an hour, etc.)
I feel your pain....HTH
Lisa
-----Original Message-----
From: Sandy Ocheltree [mailto:ora_dba_at_hotmail.com]
Sent: Monday, July 31, 2000 2:33 PM
To: Multiple recipients of list ORACLE-L
Subject:
We've recently had a lot of problems with our archive log directory filling and the database freezing. Now that I've mastered how to fix this quickly, I'm wondering why I have to fix it so often. Is there some sort of optimal/minimum size for an archive log directory? We are running a 1 terabyte db with varying amounts of activity, and the archive log directory can hold up to 11G. The archived logs are being written to tape every 4 hrs, but this often isn't fast enough--sometimes the directory fills in an hour. Should I just increase the frequency that the logs are written to tape? Add space? Any advice would be appreciated.
Thanks,
Sandy
-- Author: Sandy Ocheltree INET: ora_dba_at_hotmail.com Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). ------_=_NextPart_001_01BFFB3A.08E5EFA8 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printableReceived on Mon Jul 31 2000 - 16:55:25 CDT
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<P><FONT SIZE=3D2>Sandy, </FONT>
</P>
<P><FONT SIZE=3D2>Add as much space as you can get!!! </FONT>
</P>
<P><FONT SIZE=3D2>If you are shooting for 4 hour intervals, I would ask =
for something like </FONT>
<BR><FONT SIZE=3D2><your # of arclogs per hour at peak> * =
<size of arclogs> =3D hourly_bytes</FONT>
</P>
<P><FONT SIZE=3D2>4 * <hourly_bytes> =3D initial size of arclog =
destination</FONT>
</P>
<P><FONT SIZE=3D2>Assuming it takes 1 hour to run your arclog cleanups: =
add another hourly_bytes to your total. That way you can hold 4 = hours worth of arclogs plus another hour's worth while the cleanup = script is running. Of course this is very pessimistic. =
</FONT></P>
<P><FONT SIZE=3D2>Does that make sense? You may also choose to =
size it down if you have definite information about your peak = processing times (only lasts an hour, etc.)</FONT></P>
<P><FONT SIZE=3D2>I feel your pain....HTH</FONT>
<BR><FONT SIZE=3D2>Lisa</FONT>
</P>
<BR>
<P><FONT SIZE=3D2>-----Original Message-----</FONT>
<BR><FONT SIZE=3D2>From: Sandy Ocheltree [<A =
HREF=3D"mailto:ora_dba_at_hotmail.com">mailto:ora_dba_at_hotmail.com</A>]</FON= T>
<BR><FONT SIZE=3D2>Sent: Monday, July 31, 2000 2:33 PM</FONT>
<BR><FONT SIZE=3D2>To: Multiple recipients of list ORACLE-L</FONT>
<BR><FONT SIZE=3D2>Subject: </FONT>
</P>
<BR>
<P><FONT SIZE=3D2>We've recently had a lot of problems with our archive =
log directory filling</FONT>
<BR><FONT SIZE=3D2>and the database freezing. Now that I've mastered =
how to fix this quickly,</FONT>
<BR><FONT SIZE=3D2>I'm wondering why I have to fix it so often. Is =
there some sort of</FONT>
<BR><FONT SIZE=3D2>optimal/minimum size for an archive log directory? =
We are running a 1</FONT>
<BR><FONT SIZE=3D2>terabyte db with varying amounts of activity, and =
the archive log directory</FONT>
<BR><FONT SIZE=3D2>can hold up to 11G. The archived logs are being =
written to tape every 4 hrs,</FONT>
<BR><FONT SIZE=3D2>but this often isn't fast enough--sometimes the =
directory fills in an hour.</FONT>
<BR><FONT SIZE=3D2>Should I just increase the frequency that the logs =
are written to tape? Add</FONT>
<BR><FONT SIZE=3D2>space? Any advice would be appreciated.</FONT>
</P>
<P><FONT SIZE=3D2>Thanks,</FONT>
<BR><FONT SIZE=3D2>Sandy</FONT>
</P>
<P><FONT =
SIZE=3D2>_______________________________________________________________= _________</FONT>
<BR><FONT SIZE=3D2>Get Your Private, Free E-mail from MSN Hotmail at <A =
HREF=3D"http://www.hotmail.com" = TARGET=3D"_blank">http://www.hotmail.com</A></FONT>
</P>
<P><FONT SIZE=3D2>-- </FONT>
<BR><FONT SIZE=3D2>Author: Sandy Ocheltree</FONT>
<BR><FONT SIZE=3D2> INET: ora_dba_at_hotmail.com</FONT>
</P>
<P><FONT SIZE=3D2>Fat City Network Services -- (858) =
538-5051 FAX: (858) 538-5051</FONT>
<BR><FONT SIZE=3D2>San Diego, =
California -- Public Internet = access / Mailing Lists</FONT>
<BR><FONT =
SIZE=3D2>---------------------------------------------------------------= -----</FONT>
<BR><FONT SIZE=3D2>To REMOVE yourself from this mailing list, send an =
E-Mail message</FONT>
<BR><FONT SIZE=3D2>to: ListGuru_at_fatcity.com (note EXACT spelling of =
'ListGuru') and in</FONT>
<BR><FONT SIZE=3D2>the message BODY, include a line containing: UNSUB =
ORACLE-L</FONT>
<BR><FONT SIZE=3D2>(or the name of mailing list you want to be removed =
from). You may</FONT>
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